• Metal
• How To Use: After the product is received, it does not need to be debugged. It can be ignited by alcohol, and the boiler can be used with water
• Product Parameters: Power cylinder inner diameter 16mm, piston stroke 16mm, piston diameter 16mm, flywheel diameter 54mm, pulley diameter 24mm, the power generation voltage is 4-9v
• Material: Alloy Steel Aluminium Alloy Brass, The heating cylinder is specially designed to be made of thickened glass, which has no pressure even if heated for a long time
• Educational Toy: This is a fun and imaginative desktop technology toy. You can watch the magic work and energy transformation process
• Usage: Mini Engine is a science educational toy that can be used to study the working principle of the external combustion engine